Bane called Eclypsa to him to discuss taking out the drains. He had many things on his mind and the maintenance of the drains was not a priority. He wondered why she didn't use the nanobots but there was precious few of the packs left. Her voice heralded her arrival, he could head her talking to Barsad.
"Doctor," he greeted when she entered but his gaze caught a bruise on her pale neck and his voice hardened accusingly, "Who has touched you? Who did that!" Her hand reflexively reached to touch it, "How do you know it was a person? It could have been an unfortunate accident with a vacuum cleaner. Or it could've come from a woman," her reply was typically insolent but like a wolf, Bane detected guilt.
"Who have you been fucking? You whore, spreading your legs for any man!" He snarled, hiding his hurt and betrayal under his anger. Eclypsa raised her chin, "Any man but you," she sniffed. Bane lunged at her and she tried to dodge but he was too fast. He grabbed her by the throat and snarled, "You're mine."
Eclypsa fought like a cornered animal, scratching and hitting him in certain areas that made him spasm involuntarily and she wriggled out of his hold. Before she could escape, Bane grabbed her leg. Eclypsa grabbed something from the tray and injected it into his neck. Blackness rose and overtook him like a tidal wave. The last thing he saw was Eclypsa running away. She never looked back.
Bane woke with a horrendous feeling of grogginess and was completely alone on the cold linoleum floor of the hospital. He sat up slowly trying to alleviate the spinning of the world. Groaning he stood up and staggered out of the OR. Surprisingly there were no soldiers patrolling the halls. Feeling uneasy he picked up the pace and at the hospital's main lobby he was met by the Captain America, Falcon, Black Widow, and Iron Man.
"Well. This is it," Bane grunted and smashed the fire alarm. The harsh siren screamed in the background and the uneasy feeling that Bane sensed turned into something approximating dread. This was the signal for his men to come running and providing him with human fodder to help bog down the Avengers so that he could get rid of them.
"Your men aren't coming," Captain America's voice rang out with authority, "Please surrender. This is your last warning!" Bane laughed, "I don't think so." He slapped the dash strapped to the front of the vest he wore. Metal shot out and encased him in a solid cocoon. For a second, he feared that HYDRA betrayed him. A second later, whirring and beeping sounds came from all sides as the metal shifted around his body forming an exoskeleton.
Without warning he charged at the Avengers batting away Falcon easily and flinging the Black Widow onto the ground. Ironman fired some ion blasts that the suit absorbed and listening to the instructions the mechanical voice spoke in his ear, Bane fired torpedoes in Ironman's general direction. Focusing on Captain America, he started a barrage of punches and kicks keeping them simple. The Captain has some fancy dodges but they took too long and he couldn't quite keep up with Bane's punches. Bane had to give it to the Captain, the man knew how to take a hit. It was only a matter of time before he landed a solid punch that took Captain America down. He felt someone land on his back and electricity ran through his body. Then he felt punches to his head that tried to remove his helmet.
Ironman screamed, "Hold him still!" And fired more blasts of energy at Bane. The Widow leapt off and was replaced by the Falcon who succeeded in tearing his helmet off. Holding to a gun to Bane's head he growled, "It's over. You lost."
"Did I?" Bane triggered his failsafe which set off explosions all throughout the city. The failsafe was to destroy the city's infrastructure and make it impossible to rebuild. Over the past 2 years as he expanded in the city, his men planted explosives everywhere in important locations. He targeted centers of culture, commerce, and transportation. It was brilliant, he would isolate the city from help and evacuation while he would escape. All he needed was that pesky doctor.
Reaching back, Bane grabbed Falcon and flipped him over sending him crashing into Black Widow. Captain America tackled him and the two of them rolled around punching one another while Ironman screamed, "Steve, get out of the way! You're in my shot!"
Captain America found his shield and used it like a bludgeon, prying apart the metal exo suit. With one final smack in Bane's face with the shield, Captain America vaulted off and Ironman fired a final blast into the opening.
Bane knew he was dying, that blast damaged something inside and he wasn't going to survive another. He didn't want to die here, not without seeing her again. He pointed his arm upwards and fired all his remaining missiles into the ceiling bringing the entire upper floor down upon them. While the Avengers scattered to avoid the debris, Bane used the opportunity to flee.